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Deepak Gusain,Yogesh Chandra Sharma,Varsha Srivastava 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.3
Studies on the removal of copper by adsorption on modified sand have been investigated. The adsorbentwas characterized by XRD, FTIR and SEM. Removal of Cu was carried out in batch mode. The values ofthermodynamic parameters namely DG0, DH0 and DS0 at 25℃ were found to be -0.230 kcal-1 mol-1,+4.73 kcal-1 mol-1 and +16.646 cal K-1 mol-1, respectively. The process of removal was governed bypseudo second order rate equation and value of k2 was found to be 0.122 g mg-1 min-1 at 25℃. Theresultant data can serve as baseline data for designing treatment plants at industrial scale.
Deepak Gusain,Shikha Dubey,Siddh Nath Upadhyay,Chih H. Weng,Yogesh C. Sharma 한국공업화학회 2016 Journal of Industrial and Engineering Chemistry Vol.33 No.-
A nanoadsorbent, nano zirconia was investigated for the removal of Orange G from aqueous solutions. Optimization was carried out via Box-Behnkehn Design and one variable at a time design. Theparameters namely initial concentration (50–100 ppm), pH (2 to 6), and adsorbent dose (2 to 10 g/L) at30 8C were optimized by BBD. The following conditions were pointed out by OVAT: pH = 2, initialconcentration = 50 ppm and adsorbent dose = 2 g/L. The response surface methodology results for pHand initial concentrations were the same as that obtained by OVAT but were different for adsorbent dose